Device for orientating whipstocks



Nov; 5, 1929." v W, l-JLGvEls.v 1,734,033 l DVICE FOR ORIENTATING WHIPSTOCKS l ATTORNEYS l Patented Nov. 5, 1929 WILFRED H. GEIS, F LOSANGELES, CALIFORNIA DEVICE FOR ORIENTATING WHIPSTOCKEl Application ledJuly 1, 1929. Serial No. 575,217. v

Whip stocks are used for the purpose of diverting drill tools in wellholes from the normal direction of advance ofthe drill tools. They areused for various purposes such as to drill through casin and to sidetrack. Such whip stocks'are o wedge shape and when introduced into thewell hole are supported y at their small end. The center of gravity insuch whip stocks is such that in a crooked hole the whip stock restsagainst the wall of the hole or casing with the inclined face on the uper side. Thus, when a hole is crooked the w 'p stock will generallyposition itself so as v to dil/vert the drilling tool toward the highside of the hole and thus tend to accentuate the crookedness.

'The present invention relates to a pendulous basal device which may beattached to a whip stock and will cause an effective center of gravitypositionable in any desired transverse relation to the whip stock. Thus,thde whip stock may have its inclined face orientated as desired.

`These objects are accomplished by means of the embodiment of myinvention illustrated in the accompanying drawings, in which,:

Fig. 1 is a vertica`l section through a crook` -ed well hole showing awhip stock cemented in position preparatory to continuance of drilling;Fi 2 is an elevational view partly in section s owing a whip stock lwithmy orientator connected thereto; Fig. 3 is a plan view thereof and Figs.4 and -5 aresections as seen on the lines correspondingly numbered.

Referring'with more particularity to the drawings and especially Figs. 2to 5, a whip y stock is marked 6. It is provided with an v 10 inclinedlface 7 and a straight face 8. V The whip stock in effect is atruncated'cylindrical body with an inclined lface extending diagonallyfrom diametrically opposite sides at opposite ends.. The inclined facemay be dished as shown inl Fig. 4. However, the whip stockmay not haveacircular peripheral surface for the body, but may be varied therefromas found expedient. The whip stock forms no part of thepresentinvention. As shownit has a pin 9 at its lower end which'is 50threaded.

The orientator is shown as an elongated body having portions cut away tooffset the center of gravity from its geometrical axis. In the presentinstance, the orientator is cylindrical on its outer surface asindicated by 10 y and a portion of the body extending longitudinallythereof is cut away as indicated by 11. A threaded box 12 is formed atone end to serve for attaching the orientator to the whip stock 10. Itis within the purview of my invention to provide any other suitablemeans for connecting the whip stock and orientator and permitting anangular adj ustf ment of the orientator with relation to the whip stock.It is further within the purview of my 4invention to construct anorientator,v which may be solid, but wherein the body is formed ofmaterials havingk divers densities so that the center of gravity of theorientator is offset from the geometrical axis.

Assuming that a crooked hole is to be straightened as shown in Fig. 1and that a surve ofthe hole has been made to determine the dlrection ofinclination and it is desired to straighten the hole. The orientator isattached to the whip stock as shown in Fig. 2 with its center of gravityon the opposite side of the longitudinal axis A. The orientator is anularly positioned on the Whip stock such t at its pendulous actioncauses the whip stock and orientator to position themselves with theinclined face 7 toward the low side of the hole as shown in Fig. 1. Theposition of the whip stock will then be such as to tend d to divert thedrill-ing tools away from the axis of inclination of the hole. In Fig.1, the hole is marked H. The axis of the hole is4 indicated by A. Thewhip stock W with its orientator O attached is shown cemented inposition by cement C. The effect upon the drilling tool Will be obvious.It may be desired to guide the drilling tool. in another direction. Byturning the orientator the center 5 of gravity of the combined whipstock and orientator may be so disposed as to cause the the instrumentto rest in the hole with the inclined face orientated in anypreldetermined direction. v v What I claim is 1. In lcombination with awhip stock, an orientator comprising an'elongate extension for the basalportion of said body and having a center of gravity oilset from itsgeometrical longitudinal axis.

2. In combination with a whipI stock, an orientator comprising anelongate extension for the basal portion of said body, said orientatorbeing angularly adjustable With relation to said Whip stock about itsgeometrical longitudinal axis, said orientator havin a center of gravityoffset from its geometrlcal longitudinal axis.

3. In combination With a Whip stock, an

oricntator penduluously attached thereto and normally fixed againstrotation about the axis extending through said orientator and Whipstock, said orientator having a center of gravity oiiset from itsgeometrical longitudinal axis.

4. In combination IWith a whip stock, an. orientator penduluouslyattached thereto and normally fixed against rotation about the axisextending through said orientator and Whip stock, said oricntator beingangularly adjustable With relation to said Whip stock and havingavcenter of gravity offset from its geometrical longitudinal axis.

. 5. In combination With a whip stock, an

orientator detachably connected thereto and comprising an elongateextension for theI basal portion of said body, said orientator I havinga center of gravity offset from its geometrical longitudinal axis.

6. In combination with a whip stock, an

orientator detachably connected thereto and adjustable angularly Withrespect to said Whip stock, said orientator comprising an elongateextension for the basal portionof said body and having a center ofgravity olfset from its eometrical longitudinal axls.

In Witness that I claim the foregoing I have hereunto subscribed my namethis 24th day of June, '1929. v

WILFRED H. GEIs.

